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Grade 6 Titanium vs. 7020 Aluminum

Grade 6 titanium belongs to the titanium alloys classification, while 7020 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is grade 6 titanium and the bottom bar is 7020 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
70
Elongation at Break, % 11
8.4 to 14
Fatigue Strength, MPa 290
110 to 130
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 39
26
Shear Strength, MPa 530
110 to 230
Tensile Strength: Ultimate (UTS), MPa 890
190 to 390
Tensile Strength: Yield (Proof), MPa 840
120 to 310

Thermal Properties

Latent Heat of Fusion, J/g 410
380
Maximum Temperature: Mechanical, °C 310
210
Melting Completion (Liquidus), °C 1580
650
Melting Onset (Solidus), °C 1530
610
Specific Heat Capacity, J/kg-K 550
880
Thermal Conductivity, W/m-K 7.8
150
Thermal Expansion, µm/m-K 9.4
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
39
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
120

Otherwise Unclassified Properties

Base Metal Price, % relative 36
9.5
Density, g/cm3 4.5
2.9
Embodied Carbon, kg CO2/kg material 30
8.3
Embodied Energy, MJ/kg 480
150
Embodied Water, L/kg 190
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
23 to 46
Resilience: Unit (Modulus of Resilience), kJ/m3 3390
110 to 690
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
47
Strength to Weight: Axial, points 55
18 to 37
Strength to Weight: Bending, points 46
25 to 41
Thermal Diffusivity, mm2/s 3.2
59
Thermal Shock Resistance, points 65
8.3 to 17

Alloy Composition

Aluminum (Al), % 4.0 to 6.0
91.2 to 94.8
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 0
0.1 to 0.35
Copper (Cu), % 0
0 to 0.2
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.5
0 to 0.4
Magnesium (Mg), % 0
1.0 to 1.4
Manganese (Mn), % 0
0.050 to 0.5
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.2
0
Silicon (Si), % 0
0 to 0.35
Tin (Sn), % 2.0 to 3.0
0
Titanium (Ti), % 89.8 to 94
0 to 0.25
Zinc (Zn), % 0
4.0 to 5.0
Zirconium (Zr), % 0
0.080 to 0.25
Residuals, % 0
0 to 0.15